<!doctype html>
<title>请提交Excel表</title>
<h1>请提交Excel表,格式如下图:</h1>
<img src="{{ url_for('static', filename='images/Course.png') }}">
<form action="" method=post enctype=multipart/form-data>
    <p><input type=file name=file>
    <input type=submit value=Upload>
</form>
